1.7 Safety
1.7.1 General Safety Principles
If handled improperly, frequency converters have the
potential for fatal injury as they contain high-voltage
components. Only qualified personnel are allowed to install
and operate the equipment. Do not attempt repair work
without first removing power from the frequency converter
and waiting the designated amount of time for stored
electrical energy to dissipate.
Strict adherence to safety precautions and notices is
mandatory for safe operation of the frequency converter.
1.7.2 Qualified Personnel
Correct and reliable transport, storage, installation,
operation, and maintenance are required for the trouble-
free and safe operation of the filter. Only qualified
personnel are allowed to install or operate this equipment.
Qualified personnel are defined as trained staff, who are
authorized to install, commission, and maintain equipment,
systems, and circuits in accordance with pertinent laws and
regulations. Also, the qualified personnel must be familiar
with the instructions and safety measures described in this
manual.
WARNING
IMPROPER INSTALLATION
Improper installation of the filter or the frequency
converter may cause death, serious injury, or equipment
failure.
•
Follow this design guide and install according
to National and Local Electrical Codes.
WARNING
HIGH VOLTAGE
Filters contain high voltage when connected to AC mains
input. Failure to perform installation, start-up, and
maintenance by qualified personnel can result in death
or serious injury.
•
Only qualified personnel must perform instal-
lation, start-up, and maintenance.
•
Never work on a filter in operation.
WARNING
DISCHARGE TIME
The VLT
®
Advanced Harmonic Filters AHF 005/AHF 010
contain capacitors. The capacitors can remain charged
even when the filter is not powered. Failure to wait the
specified time after power has been removed before
performing service or repair work can result in death or
serious injury.
•
Wait at least 10 minutes.
CAUTION
ELECTRICAL HAZARD
When measuring on live filters, observe the valid
national regulations for the prevention of accidents (for
example VBG 4).
The electrical installation must be carried out according
to the appropriate regulations (for example cable cross-
sections, fuses, and PE connection). When using the
filters with frequency converters without safe separation
from the supply line (to VDE 0100), include all control
wiring in further protective measures (for example
double insulated or shielded, grounded, and insulated).
CAUTION
HOT SURFACE
When in use, the filter surface becomes hot.
•
Do NOT touch the filter during operation.
CAUTION
OVERTEMPERATURE
Overtemperature damages the filter chokes. To prevent
overtemperature:
•
Use temperature switches, see
chapter 4.2.3 Overtemperature Protection
•
Perform an immediate stop or a controlled
ramp down within 30 s.
.
CAUTION
PROTECTIVE DEVICES
Equip systems where filters are installed with extra
monitoring and protective devices according to the valid
safety regulations, for example rules on technical tools
and regulations for the prevention of accidents.
Introduction
Design Guide
MG80C502
Danfoss A/S © 10/2016 All rights reserved.
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Содержание VLT AHF 005
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